micro-image-manager/lib/handler/add-image.js

Manage images in your microservices

"use strict";

const sharp = require('sharp');

const {
  parseForm
} = require('../util/form-util');

const {
  loadProfiles,
  validateProfiles
} = require('../util/size-util');

const {
  buildImageRecords
} = require('../util/image-util');

module.exports = async (req, res, db) => {
  var _fields$enlarge;

  const [fields, files] = await parseForm(req);
  const profiles = loadProfiles(fields);
  const name = fields.name;

  if (!name) {
    res.writeHead(400);
    return res.end(JSON.stringify({
      status: 400,
      error: 'Name is required'
    }));
  }

  if (name.match('[a-zA-Z0-9]{24}')) {
    res.writeHead(400);
    return res.end(JSON.stringify({
      status: 400,
      error: 'Name cannot be with mongodb ObjectID hex format'
    }));
  }

  if (Object.keys(files).length !== 1) {
    res.writeHead(400);
    return res.end(JSON.stringify({
      status: 400,
      error: 'You need one image file'
    }));
  }

  const imageFile = files[Object.keys(files)[0]].path;
  const sharped = await sharp(imageFile);
  const metadata = await sharped.metadata();

  if (((_fields$enlarge = fields['enlarge']) == null ? void 0 : _fields$enlarge.toLowerCase()) !== 'true') {
    const validation = validateProfiles(profiles, metadata.width, metadata.height);

    if (validation.length > 0) {
      res.writeHead(400);
      return res.end(JSON.stringify({
        status: 400,
        error: 'Invalid image sizes',
        errors: validation
      }));
    }
  }

  const records = await buildImageRecords(imageFile, profiles);
  const id = await db.add(name, records);
  res.writeHead(200);
  res.end(JSON.stringify({
    id,
    profiles
  }));
};